Fujitsu D3231-S Technotes page 35

Interfaces & Connectors
Rear Audio / Frontpanel Audio Connector [New]
Rear Audio Connectors
Pin Signal
A Line input
Pin Signal
A Headphone output
Pin Signal
A Microphone input
Electrical input characteristics
Line: Stereo max. 1,2Vrms (Gain=0dB) input voltage
Microphone: Supports electret microphones with 1,3V
Electrical output characteristics
Headphone: Stereo max. 1,2 Vrms output voltage at 32Ohm load
System Speaker (via frontpanel connector): Mono, typ. 2W (RMS) at 4Ohm load
Mute Topology
When an outPut device (HeadPhone, HifiAmp...) is attached to an output jack, the following mute topology is required:
 FrontOut mutes RearOut and MonoOut  RearOut mutes MonoOut (frontpanel system speaker)
Remark: System beeps are only audible via the internal (frontpanel) system speaker. System beeps are also audible on the internal speaker if an external
device is plugged in.
a
g
e
Pin A
Line IN (light blue)
Pin A
Headphone OUT (lime)
Pin A
Microphone IN (pink)
(Gain=0dB) or 0,13V
rms rms
TechNotes D323x-S_D3243-S V1.2
mainboards
(Gain=20dB)
Page 35 of 98 http://www.fujitsu.com/fts/products/computing/pc/accessories/mainboards